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Administrative Assistant/Accounting Clerk

American Technical Services, Inc.
Norco, CA Full Time
POSTED ON 4/10/2026
AVAILABLE BEFORE 6/7/2026

About ATS

American Technical Services, Inc. (ATS) is a technology and engineering company focused on cutting-edge metrology software development, advanced analytical metrology, and calibration solutions for diverse industry sectors including utilities, nuclear, biotech, pharmaceutical, and defense. Our team of experts brings decades of experience and innovative solutions to help ensure precision and quality in mission-critical environments.

Position Summary

We’re looking for a proactive and organized Administrative Assistant to support our Accounting team. This role is ideal for a dependable multitasker who thrives in a collaborative, small-company environment and wants to help keep our finance operations running smoothly.

Key Responsibilities

  • Provide administrative support to the Accounting department, including filing, data entry, and document organization
  • Assist in preparing and organizing invoices, expense reports, and financial paperwork
  • Maintain accurate accounting records and help with basic record-keeping tasks
  • Coordinate communication with internal teams and external vendors
  • Support accounts payable and receivable as needed
  • Assist with monthly reporting tasks and reconciliation activities
  • Manage calendars, scheduling, and general office duties
  • Help maintain confidentiality and accuracy of financial information

What We’re Looking For

  • High school diploma or equivalent (related coursework or college experience is a plus)
  • Prior experience in administrative support or office work
  • Comfortable working with numbers and financial documents
  • Strong organizational skills and attention to detail
  • Proficiency in Microsoft Office (especially Excel and Outlook)
  • Excellent communication skills (written and verbal)
  • Ability to manage multiple tasks independently and work collaboratively

Why Join ATS?

  • Be part of a small, highly skilled team with a focus on innovation and quality
  • Gain exposure to real-world accounting and business operations in the engineering technology space
  • Competitive pay and employee benefits (healthcare, retirement plans, paid time off, etc.)
  • Supportive work culture with opportunities for professional growth

Pay: $22.50 - $27.00 per hour

Benefits:

  • 401(k)
  • 401(k) matching
  • Dental insurance
  • Health insurance
  • Life insurance
  • Paid time off
  • Vision insurance

Work Location: In person

Salary : $23 - $27

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